MACROMEDIA FLASH MX 2004-ACTIONSCRIPT LANGUAGE Reference page 37

trace(0xFFFFFFFF & -1); // -1
trace(4294967295 & -1); // -1
trace(4294967295 & 4294967295); // -1
See Also
&= (bitwise AND assignment), ^ (bitwise XOR), ^= (bitwise XOR assignment), | (bitwise OR),
|= (bitwise OR assignment), ~ (bitwise NOT)
& (bitwise AND) 37